I have Pro Tools HD 10.3.4 and Ableton Live 9.0.4 and for some reason Ableton doesn't show up as an instrument at all. I can't even get so far as to have it tell me it won't work since I can't choose it from the list.
I've reinstalled PT, reinstalled Ableton, reinstalled ReWire... The installation of ReWire finishes, but I see no changes in my plugins, and nothing at all changes in Pro Tools.
Many posts I've found around the net talk about problems with Ableton running as a slave, but I don't even see it to select it and watch it fail... if that would happen.